Question: What is used for Denver to find out their population is 620018.0?
Paraphrase: How can you verify that Denver's population is 620018?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q16554 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '620018.0')) . ?s pq:P459 ?value}